/* Ripple In */
.keyframes(~"@{nameSpace}-ripple-in", {
	100% {
		top: 0;
		right: 0;
		bottom: 0;
		left: 0;
		opacity: 1;
	}
});

.ripple-in() {
	@outerBorderWidth: 4px;
	@innerBorderWidth: 4px;

	.hacks();
	position: relative;

	&:before {
		content: '';
		position: absolute;
		border: @primaryColor solid @outerBorderWidth;
		top: -(6px + 6px);
		right: -(6px + 6px);
		bottom: -(6px + 6px);
		left: -(6px + 6px);
		opacity: 0;
		.prefixed(animation-duration, 1s);
	}

	&:hover:before,
	&:focus:before,
	&:active:before {
		.prefixed(animation-name, ~"@{nameSpace}-ripple-in");
	}
}